Slot fault

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This fault indicates that the connection between an optional board and the main API (control unit) has been broken. This could be due to an improperly seated option board, a faulty slot, or a damaged board itself.

• Charging switch (contactor) remains open after attempted closure.
• Faulty charging contactor coil or contacts.
• Loss of control signal to the charging switch.
• Mechanical obstruction preventing the charging switch from closing.
• Pre-charge resistor circuit failure preventing switch closure.

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1. 1

   Check the optional board and its slot to ensure the board is securely and correctly seated.